Ключевые слова: blank, book, books, collection, college, color, cover, data, document, education, green, group, hardcover, heap, high, image, information, isolated, knowledge, law, learn, learning, legal, library, literature, nobody, objects, office, open, page, paper, pile, read, reading, red, research, ribbon, row, school, science, stack, story, student, study, text, view, vintage, white,